Forces can change the shape of objects, or them. Forces can (squash) or sttretch objects. When you stand on the floor, your weight compresses the bonds between the particles in the floor. They pysh back and the floor -

Force can change a number of things about an object. These include:

direction

speed

both speed and direction

shape

Note that unbalanced forces can do any of these, since the net total of forces is not zero. In the case of balanced forces, nothing about the object will change.